Brainliest to correct answer Calculate the focal length of a concave mirror whose image distance is 0.080m when the object distance is 0.25m.

0.061m

Explanation:

Given the following

image distance v = 0.080m

Object distance u = 0.25m

For concave mirror, the image distance is positive

Using the mirror formula;

1/f = 1/u + 1/v

1/f = 1/0.25 + 1/0.080

1/f = 4 + 12.5

1/f = 16.5

f = 1/16.5

f = 0.061m

Hence the focal length of the mirror is 0.061m

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

brainliest

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach